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Simplifying x2 + -4x + 6 = 0.8 Reorder the terms: 6 + -4x + x2 = 0.8 Solving 6 + -4x + x2 = 0.8 Solving for variable 'x'. Reorder the terms: 6 + -0.8 + -4x + x2 = 0.8 + -0.8 Combine like terms: 6 + -0.8 = 5.2 5.2 + -4x + x2 = 0.8 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 5.2 + -4x + x2 = 0.0 Begin completing the square. Move the constant term to the right: Add '-5.2' to each side of the equation. 5.2 + -4x + -5.2 + x2 = 0.0 + -5.2 Reorder the terms: 5.2 + -5.2 + -4x + x2 = 0.0 + -5.2 Combine like terms: 5.2 + -5.2 = 0.0 0.0 + -4x + x2 = 0.0 + -5.2 -4x + x2 = 0.0 + -5.2 Combine like terms: 0.0 + -5.2 = -5.2 -4x + x2 = -5.2 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = -5.2 + 4 Reorder the terms: 4 + -4x + x2 = -5.2 + 4 Combine like terms: -5.2 + 4 = -1.2 4 + -4x + x2 = -1.2 Factor a perfect square on the left side: (x + -2)(x + -2) = -1.2 Can't calculate square root of the right side. The solution to this equation could not be determined.
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